Catalytic pyrolysis of pinewood over ZSM-5 and CaO for aromatic hydrocarbon: Analytical Py-GC/MS study

Rahman, Md. Maksudur; Chai, Meiyun; Sarker, Manobendro; Nishu,

doi:10.1016/j.joei.2019.01.014

Cited by 55 publications

(5 citation statements)

References 44 publications

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“…Sample 3 of sawdust in Table 2 had a high carbon content, but it is actually lower than the ranges reported in other work, which were 48.80-50.30% for samples of the genus Pinus [60]. Other published studies found fixed carbon values of 12.20% [61], 16.76% [62], and 15.96% [63]. Therefore, most of the data from the results of our analyses of fixed carbon are below the figures reported in the literature for the genus Pinus.…”

Section: Characterization Of the Biomasscontrasting

confidence: 50%

Exploitation of Wood Waste of Pinus spp for Briquette Production: A Case Study in the Community of San Francisco Pichátaro, Michoacán, Mexico

et al. 2020

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This study describes the exploitation of wood waste (Pinus spp.) in the form of sawdust and shavings generated during the production of furniture and artisanal items in a community in the state of Michoacán, western Mexico. A process is described to densifying this raw material, to produce solid-type biofuel briquettes that can be used to satisfy the need to generate low-power heat for residential sectors. Briquette production involved six stages: (a) gathering samples of sawdust and shavings from artisanal workshops in the community; (b) proximal characterization of the samples; (c) elaborating the briquettes; (d) physicochemical characterization of the briquettes; (e) evaluation of the physical-thermal combustion of the briquettes; and (f) an economic evaluation of briquette production to determine viability. Finally, we performed a comparative analysis of the energy, economic, and environmental indicators of the briquettes produced and conventional pine and oak firewood (Pinus spp., Quercus spp.) in the study community. The results show the viability of using biomass residues to make briquettes, which are efficient, economic and easy to make and use.

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“…To achieve deep deoxygenation in biomass pyrolysis, zeolite catalysts are still needed. Rahman et al reported that the ZSM-5 catalyst could selectively promote the aromatization and improve the yield of aromatic hydrocarbons (up to 42.19 wt %) in the catalytic pyrolysis process of pinewood sawdust. Hu et al found that more olefins were formed in the ex-situ catalytic pyrolysis of pine sawdust over HZSM-5.…”

Section: Biomass Catalytic Pyrolysismentioning

confidence: 99%

A Review of Recent Advances in Biomass Pyrolysis

et al. 2020

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Pyrolysis has created many (and will open more) possibilities for high-value utilization of biomass. To obtain the optimal amount of desired pyrolysis products, especially high-quality bio-oil, a great deal of effort has been conducted in both academia in the past few decades, to clarify fundamental mechanisms of biomass pyrolysis and design efficient relevant technical processes. This paper comprehensively reviews recent advances in both fundamental studies and technology applications of biomass pyrolysis. First, pyrolysis mechanisms of real biomass and its major components, the reactor-scale simulation of biomass pyrolysis, and applications of pyrolysis products are discussed. Then, according to the requirements imposed to improve the physicochemical properties of respective pyrolysis products, relevant optimization and regulation methods for biomass pyrolysis process are reviewed. Previous research has indicated that biomass copyrolysis with other feedstock can not only enhance physicochemical properties of pyrolysis products but also effectively realize recycling of wastes. Thus, an in-depth discussion of recent advances in biomass copyrolysis with four different feedstocks (i.e., coal, plastics, tires, and sludge) is covered in this Review. As an indispensable component of general biomass pyrolysis, recent activities of catalytic biomass pyrolysis are also summarized, including new catalytic pyrolysis processes such as catalytic hydropyrolysis and catalytic copyrolysis. Besides, two novel heating approaches (microwave heating and solar heating) for biomass pyrolysis are described, and their features are compared with the conventional heating method. Finally, this Review is concluded with perspectives for future directions of biomass pyrolysis.

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“…ZSM-5 is a well-known promising catalyst that can promote deoxygenation in reducing the oxygenates and exhibits a promising effect on the increased formation of aromatic hydrocarbons. With a medium pore size of 5Å and appropriate acid sites (Bronsted and Lewis acid), the pyrolysis intermediates diffuse into ZSM-5 pores and undergo catalytic cracking on the active sites while cleavage of C─O and C─C bonds releases oxygen and further transformation produces aromatic hydrocarbons and small molecular weight compounds [39,40]. ZSM-5 exhibited lower formation of acids and alcohols and slightly increased the production of ketones, furans, and NCC in the organic compounds.…”

Section: Pyrolysis Experiments (Py/gc-ms)mentioning

confidence: 99%

Catalytic fast Co-Pyrolysis of sewage sludge−sawdust using mixed metal oxides modified with ZSM-5 catalysts on dual-catalysts for product upgrading

Morni

Yeung

Tian

et al. 2021

Journal of the Energy Institute

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Catalytic fast co-pyrolysis of sewage sludge and sawdust was performed using Py/GC-MS for pyrolytic product upgrades. Metal oxides (NiO and MoO3) and ZSM-5 catalysts had been introduced into single catalytic pyrolysis. The combination of NiO + MoO3 in mixed metal oxides (MMOs) was modified with ZSM-5 under a dual-catalyst with different catalytic layouts. In the pyrolysis process, the metal oxides specifically promoted the formation of phenols, ketones, and furans. ZSM-5 was proven to be more effective in producing aromatic hydrocarbons and phenols and in reducing the oxygenated compounds. The combination of MMOs with ZSM-5 effectively improved product distribution by increasing the production of aromatics and phenols. MMOs promoted the aromatics selectivity of undesirable PAHs (70.5 %), however, the addition of ZSM-5 to MMOs appeared to reduce and inhibit the formation of PAHs by 0.85 %. The highest yield of aromatics was obtained by the layout of the ZSM-5/MMO dual catalysts layout which was 21.6 %. Dual catalysts of MMOs and ZSM-5 in separated layout created promising effects in further Manuscript File increasing the production of aromatic hydrocarbons and phenols compared to the mixture of MMOs modified ZSM-5.

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“…However, the shortcomings of zeolite catalysts are evident; for example, the narrow pore structure of the zeolite does not allow the passage of larger compounds leading to polymerization reactions at the surface to form coke. Therefore, the density and activity of the acidic part of the zeolite can be adjusted by introducing metallic substances to reduce catalyst deactivation and improve the selectivity of the bio-aromatics. − For example, Vichaphund et al researched the production of bio-aromatics from Jatropha residues on Mo/HZSM-5 catalyst at 500 °C. Compared with the unmodified HZSM-5 catalyst, the Mo-modified HZSM-5 catalyst has a higher BTX yield (about 78.9%).…”

Section: Mechanism Of Bio-aromatics Preparationmentioning

confidence: 99%

State of the Art and Perspectives in Catalytic Conversion Mechanism of Biomass to Bio-aromatics

Yan

2020

Energy Fuels

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Research on biomass decomposition and transformation has attracted widespread attention from academia to industry worldwide, aiming to harvest bio-aromatics from the abundant renewable biomass resource. However, the complexity of the structure and composition of biomass makes its conversion into bio-aromatics a very challenging task. Hence, it is necessary to understand in depth the mechanism of biomass conversion to bio-aromatics with higher selectivity. Although considerable progress has been achieved on the development of bio-aromatics from biomass, the detailed process and reaction mechanism for the bioaromatics synthesis has lacked a complete summary. This work reviews the recent advances in the conversion of biomass to bioaromatics, including biomass gasification, pyrolysis, and hydrolytic fermentation, etc. Various biomass sources and biomass-derived model compounds as examples were used to illustrate the effect of different raw materials on the yield of bio-aromatics. Subsequently, this review summarizes the influence of different catalysts on the synthesis of bio-aromatics and the metal-modified HZSM-5 catalysts exhibited a higher bio-aromatics yield compared with those of other catalysts. Finally, the reaction mechanism of biomass to bio-aromatic hydrocarbons via different reaction routes was discussed in detail. The aim is for the conversion mechanism presented in this work to provide a reference for the efficient conversion of bio-aromatics from biomass in the future.

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“…In contrast, the ZSM-5 catalyst is known to experience irreversible deactivation due to alkali and alkaline earth metal oxides present in biomass. − Therefore, the red mud catalyst is a potential competitor to the synthetic and expensive HZSM-5. Although the reaction pathways of the HZSM-5-catalyzed pyrolysis of biomass, ,− cellulose, hemicelluloses, and lignin, as well as their respective model compounds (glucose, xylose, and guaiacol), have been extensively studied, there is very little published literature on the reaction pathways of the cheaper and more effective competitor, red mud.…”

Section: Introductionmentioning

confidence: 99%

Comparative Kinetic and Pyrolytic Studies of d-Glucose Using Formulated Red Mud, Sand, and HZSM-5

Abdellaoui

Agblevor

2023

Energy Fuels

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The catalytic pyrolysis of D-glucose (DG) was conducted using a thermogravimetric analyzer (TGA) and formulated red mud (FRM) as the catalyst to determine the kinetic parameters of DG decomposition in the presence of the catalyst. The FRM reduced the overall activation energy (45.58−87.35 KJ/mol) of DG conversion compared to sand (45.27−112.00 KJ/mol). The trend of the frequency factor (A) for the catalytic pyrolysis (first-order reaction: 78.1−1.14 × 10 8 s −1 ) and non-catalytic pyrolysis (firstorder reaction: 7.10−2.08 × 10 7 s −1 ) of DG was different, which indicated different reaction mechanisms. Compared to the sand and HZSM-5 catalyst, the FRM altered the thermal decomposition profile of the DG and promoted its decomposition at lower reaction temperatures. The thermogravimetric analyses showed that at 260 °C, the FRM catalyst converted more DG (50% conversion) than the HZSM-5 (44% conversion) and sand (35% conversion), which was in agreement with its activation energy. Furthermore, the DG decomposition was studied in a fixed-bed reactor using catalytic and non-catalytic pyrolysis conditions. The FRM promoted the formation of low-molecular-weight compounds (acetic acid and formic acid, CO 2 , formaldehyde, and CO) and hindered the formation of furans. The HZSM-5 catalyst promoted the formation of furans.

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Catalytic pyrolysis of pinewood over ZSM-5 and CaO for aromatic hydrocarbon: Analytical Py-GC/MS study

Cited by 55 publications

References 44 publications

Exploitation of Wood Waste of Pinus spp for Briquette Production: A Case Study in the Community of San Francisco Pichátaro, Michoacán, Mexico

A Review of Recent Advances in Biomass Pyrolysis

Catalytic fast Co-Pyrolysis of sewage sludge−sawdust using mixed metal oxides modified with ZSM-5 catalysts on dual-catalysts for product upgrading

State of the Art and Perspectives in Catalytic Conversion Mechanism of Biomass to Bio-aromatics

Comparative Kinetic and Pyrolytic Studies of d-Glucose Using Formulated Red Mud, Sand, and HZSM-5

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